A DimensionMap that maps an MdmPrimaryDimension or an MdmDimensionLevel to a data source, such as a column in a relational table. You get a MemberListMap by calling the findOrCreateMemberListMap method of the MdmPrimaryDimension or MdmDimensionLevel. If you use a MemberListMap to map an MdmPrimaryDimension or an MdmDimensionLevel, then you should not also use a HierarchyLevelMap to map an MdmHierarchyLevel to the same data source.